21 citations · 112 across the 12 of their papers we have counts for
12 papers
ALMA Reveals an Eccentricity Gradient in the Fomalhaut Debris Disk
Joshua B. Lovell, Elliot M. Lynch, Jay Chittidi +6
We present evidence of a negative eccentricity gradient in the debris disk of the nearby A-type main sequence star, Fomalhaut. Fitting to the high-resolution, archival ALMA 1.32 mm…
Why dust pressure matters in debris discs
Elliot M. Lynch, Josh B. Lovell, Antranik A. Sefilian
There is a common assumption in the particulate disc community that the pressure in particulate discs is essentially zero and that the disc streamlines follow Keplerian orbits, in…
Linear and nonlinear eccentric mode evolution in unstratified MHD discs
Elliot M. Lynch, Janosz W. Dewberry
In this paper we develop a framework for studying unstratified, magnetised eccentric discs and compute uniformly precessing eccentric modes in a cylindrical annulus which provide c…
A Local Model for the Spherical Collapse/Expansion Problem
Elliot M. Lynch, Guillaume Laibe
Spherical flows are a classic problem in astrophysics which are typically studied from a global perspective. However, much like with accretion discs, there are likely many instabil…
Eccentric debris disc morphologies II: Surface brightness variations from overlapping orbits in narrow eccentric discs
Joshua B. Lovell, Elliot M. Lynch
We present Paper II of the Eccentric Debris Disc Morphologies series to explore the effects that significant free and forced eccentricities have on high-resolution millimetre-wavel…
Asynchronous accretion can mimic diverse white dwarf pollutants II: water content
Marc G. Brouwers, Andrew M. Buchan, Amy Bonsor +3
Volatiles, notably water, are key to the habitability of rocky planets. The presence of water in planetary material can be inferred from the atmospheric oxygen abundances of pollut…
Focusing of nonlinear eccentric waves in astrophysical discs. II. Excitation and damping of tightly-wound waves
Elliot M. Lynch
In this paper I develop a nonlinear theory of tightly-wound (highly twisted) eccentric waves in astrophysical discs, based on the averaged Lagrangian method of Whitham. Viscous dis…
Eccentric debris disc morphologies I: exploring the origin of apocentre and pericentre glows in face-on debris discs
Elliot M. Lynch, Joshua B. Lovell
The location of surface brightness maxima (e.g. apocentre and pericentre glow) in eccentric debris discs are often used to infer the underlying orbits of the dust and planetesimals…
Importance of magnetic fields in highly eccentric discs with applications to tidal disruption events
Elliot M. Lynch, Gordon I. Ogilvie
Whether tidal disruption events (TDEs) circularise or accrete directly as a highly eccentric disc is the subject of current research and appears to depend sensitively on the disc t…
Dynamical structure of highly eccentric discs with applications to tidal disruption events
Elliot M. Lynch, Gordon I. Ogilvie
Whether tidal disruption events circularise or accrete directly as highly eccentric discs is the subject of current research and appears to depend sensitively on the disc thermodyn…
Focusing of nonlinear eccentric waves in astrophysical discs
Elliot M. Lynch, Gordon I. Ogilvie
We develop a fully nonlinear approximation to the short-wavelength limit of eccentric waves in astrophysical discs, based on the averaged Lagrangian method of Whitham (1965). In th…
Hamiltonian hydrodynamics of eccentric discs
Gordon I. Ogilvie, Elliot M. Lynch
We show that the ideal hydrodynamics of an eccentric astrophysical disc can be derived from a variational principle. The nonlinear secular theory describes the slow evolution of a…